Bevel



` rig. 1.

UNITED STATES 'PATENT OFFiCE.

JOHN S. BROOKS, OF BROOKLYN, NEW YORK, ASSIGN OR TO THE PECK STOVV 85 WILCOX COMPANY, OFv SOUTHINGTON, CONNECTICUT BEVEL.

SPECIFICA'I'ION forming part of Letters Patent No. 432,367, dated July 15, 18.90.

Application filed October 14, 1889.

To all wlwm it may conccrn:

Be it known that I, JOHN S. BROOKS, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Tinners Bevels, of which the following is a specification.

My invention relates to improvements in tinners' bevels; and the objects of my invention are to produce a tool specially adapted for tinners us'e in taking the angles orbevels for pipe-elbows and various other uses and to enable any particular bevel or angle to be easily recorded.

In the accompanying drawings, Figure 1 is a front elevation of my bevel in position for use. Fig. 2 is a rear elevation of the same. Fig. 3 is a Vertical section on the line a; of Fig. 1. Fig. 4 is a front elevation of the implement when folded, and Fig. 5 is a plan view of the same. o

A designates the principal arm or base, which for convenience I prefer to make long enough to serve for a foot-rule and to graduate the back side thereof byinches and fractions of an inch, as shown in Fig. 2. To one end of this arm I pivot or hinge the anglearm B. The joint should be stiff enough to create some friction, so that the arms A B will stay at Whatever an gle they are set until force or pressure is applied to change the angle. At the outer end of the angle-arm B, I pivot the index-arm O, the end of which arm C is curved a little, so as to bring it in contact with the inner edge of the principal arm A. The inner corner of the free end of this index-arm forms a pointer or index 6, and one side of this corneris cut off 01' rabbeted to produce the shoulder 7 for resting upon the inner edge of the arln A, so that the point 01' index 6 laps over on its face a given distance, as shown in I also provide the front side of the arm A with agraduated Scale 8, with any desired numbers or figures thereon. It is only necessary that this scale extend over the middle portion of the arm A; but it is evident that it may extend over a greater portion, if desired.

With the arms A B set at any angle that may be desired the index-arm O is brought Serial No. 326,997. (No model.)

into position on the scale, and its pointer or index 6 will indicate the angle orbevel of the blades by the number of the graduation on the scale 8 or fraetion thereof over which said index rests. In additionto the graduation-scale and its numbers I form a point or dot 9 on said blade at the point where the index 6 .will rest when the arms A B are at right angles to each other.

When the arms A B are set with the index 6 at the point 9, the implement may be'used as a square. In order to take the proper an-' gle 01' bevel for a pipe-elbow, or the angle on which a pipe passes through a wall, or other angle that a tinner may have occasion to fit work for, the arms A B are moved on their joint until they match the angle desired, and then, with the index-arm in place, record the number indicated on the Scale 8. The tinner can then fold the tool into the position shown in Figs. 4 and 5 and return to his work-bench,y

reset the implement on the same angle, and proceed with his work, thereby avoiding the liability of having the bevel move in carrying it from one point to another and change the angle, as is sometimes the case when an attempt is made to carrya tool that is set on a particular angle. The tinner may also, if he wishes, make a permanent record by number of the angle used in making any particular piece of work, and that angle can any time thereafter be reproduced with this im plement by setting the index 6 at the corresponding position on the scale.

The combined length of the angle-arm B and index-arm O is only about equal to the length of the principal arm A, so that when folded the implement is about as convenient to carry or pack away as Would be a single straight arm like the arm A.

I am. aware that a prior patent shows and describes a common folding rule or yardstick with a spring-brace pivoted to one arm thereof and having a pin on one arm for engaging a series of holes in the other arm to lock said arms at different angles 'to each other. I am also aware of the thing` shown and described in patent to Quayle, No. 390,705, dated October 9, 1888. All of said prior art is hereby disclaimed.

IOO

I claim as my invention* I 1. The combination of the principztl arm A, having the Scale 8 along the middle portion on one side, the bevel-ztrmgpivotally secured by one end to said arm A 011 one side thereof, and the index-:wm C, having a pointed end :tdapted to move oversaid Scale 8, while its opposit-e end is pivotnlly connected to that end of the bevel-arm which is tarthest from the principal arm A, all ;tdztpted for being used and folded snbstztntially as deseribcd.

E2. The combination of the principel m'm A, having the Scale S, the angle-arm B, pivotally seeured to one end of said prineipztl :trm A, and the index-:wm O, pivotztlly seen red by one end to the end of said angle-arm that is farthest from its pivotal connection with said prineipal arm, the free end of said index-arm beingl pointed to serve :ts an index and havoppositc the edge of Ithe longer arm, substantiztlly :ts desc1'ibed,:n1dfor the pnrpose specified.

JOHN S. BROOKS. Witnesses:

E. IT. DARVILLE, E. TYLER. 

